TIRTIR Pure Vitamin C 24% Face Serum – 1.01 fl oz Brightening & Firming for Sensitive Skin with Triple Collagen

TIRTIR Pure Vitamin C 24% Face Serum is a concentrated brightening and firming facial serum formulated to reduce dark spots and even skin tone while remaining suitable for sensitive skin.

This serum pairs a high-strength 24% pure vitamin C concentration (246,750 ppm) with triple collagen and 0.5% alpha-bisabolol to target dullness, uneven pigmentation, and early signs of loss of firmness. Housed in recyclable glass with a removable label, the 1.01 fl oz formula aims to deliver visible refinement of skin texture and tone when used consistently as part of a daily routine.

How quickly will I see brighter-looking skin?

Results vary by skin type and routine, but many users notice improved radiance within a couple of weeks of regular application. The high vitamin C level supports surface brightening and can help reduce the appearance of post-acne marks and sun-related pigmentation over time.

• 24% pure vitamin C (246,750 ppm) for potent brightening
• Apply daily—morning or evening—as directed for visible improvement
• Use sunscreen SPF 30+ during daytime to protect results

Will this serum irritate sensitive or reactive skin?

The formula is designed with sensitive skin in mind and is non-irritation tested, but high-strength vitamin C can still be intense for very reactive skin. Patch-test first and introduce slowly—every other day—until tolerance is confirmed.

• Contains alpha-bisabolol (0.5%) to soothe and reduce visible redness
• Non-irritation tested, yet patch testing is recommended
• Start with small amounts and increase frequency as tolerated

How does the serum improve skin firmness and texture?

Triple collagen in the formula supports the look of plumper, firmer skin while vitamin C contributes to surface renewal and radiance. Over consistent use, the combined actives can refine texture and help skin appear more resilient.

• Triple collagen targets elasticity and the appearance of sagging
• Vitamin C promotes a smoother, more even-looking complexion
• Lightweight serum texture absorbs without heavy residue

How should I use this product within my skincare routine?

Apply a few drops onto clean, dry skin and gently massage until absorbed. For daytime use follow with broad-spectrum sunscreen (SPF 30 or higher); at night pair with gentle hydrators to support skin recovery.

• Use after cleansing and toning, before heavier creams
• Daytime application requires sunscreen to protect results
• Store in a cool, dark place to help maintain potency

Who is this for: This serum is aimed at people seeking a powerful brightening solution that also supports firmness—suitable for those with sensitive skin who perform a patch test and introduce the product gradually. It’s a practical choice for anyone wanting to reduce the look of dark spots, even skin tone, and add collagen-supporting ingredients to their regimen, while preferring eco-friendlier glass packaging in a compact 1.01 fl oz size.

Ingredients

Propanediol, Ascorbic Acid, Betaine, (-)-alpha-bisabolol, Water, Butylene Glycol, 1,2-Hexanediol, Centella Asiatica (Gotu Kola) Root Extract, Centella Asiatica (Gotu Kola) Extract, Centella Asiatica (Gotu Kola) Leaf Extract, Soluble Collagen, Hydrolyzed Collagen, Atelocollagen, Asiatic Acid, Madecassoside, Madecassic Acid, Asiaticoside, Acetyl Hexapeptide-8